Coupling



FIG. 1 is a perspective view of a coupling showing our new design.

FIG. 2 is a left end view of the coupling of FIG. 1.

FIG. 3 is a right end view of the coupling of FIG. 1; and,

FIG. 4 is a front elevational view of the coupling of FIG. 1, the top, bottom, and rear views being identical to the view of FIG. 4.

All portions of the coupling located between the break lines form no part of the claimed design.

The broken lines in the drawings illustrate portions of the coupling and form no part of the claimed design. 

CLAIM The ornamental design of a coupling, as shown and described. 